This week Walgreens has the 40ct boxes on truvia sweetener on sale 2/$5. But you could use the following coupons to pay less:
Buy 2 Truvia Sweetener, 40 ct $2.50 each, when you buy 2, sale price through 6/29
Use two $1.25/1 Truvia Natural Sweetener or Truvia Baking Blend with Sugar
Or $1/1 Truvia Natural Sweetener or Baking Blend with Sugar from RP 6/23 (exp 9/30)
Pay as low as $1.25 each after coupon when you buy 2
This offer is good through 6/29. Check out other Walgreens deals here.